I just bought an A100-2 Ries tripod and A250-2 head, directly from Ries by mail order. However, I'm not sure I got the right items. The head weighs less than 5 pounds, so according to the specs, they must have sent me the A250. The legs weigh about 15 pounds, so it seems I got the right legs, based on weight.

Question: Is there any way to distinguish the A250 from the A250-2, other than by weight; and similarly the A100 vs. the A100-2? I asked customer service at Ries, and they didn't know. (Incidentally, the practical difference between the models is that the A-100 and A250 are rated to support 25 pounds, while the A100-2 and A250-2 are rated to support 60 poun